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5f0141ca4c
Changes made in dsp/fourier/internal/fftpack break the formatting used there, so these are reverted. There will be complaints in CI. [git-generate] gofmt -w . go generate gonum.org/v1/gonum/blas go generate gonum.org/v1/gonum/blas/gonum go generate gonum.org/v1/gonum/unit go generate gonum.org/v1/gonum/unit/constant go generate gonum.org/v1/gonum/graph/formats/dot go generate gonum.org/v1/gonum/graph/formats/rdf go generate gonum.org/v1/gonum/stat/card git checkout -- dsp/fourier/internal/fftpack
86 lines
1.7 KiB
Go
86 lines
1.7 KiB
Go
// Copyright ©2016 The Gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package c64
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// ScalUnitary is
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//
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// for i := range x {
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// x[i] *= alpha
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// }
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func ScalUnitary(alpha complex64, x []complex64) {
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for i := range x {
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x[i] *= alpha
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}
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}
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// ScalUnitaryTo is
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//
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// for i, v := range x {
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// dst[i] = alpha * v
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// }
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func ScalUnitaryTo(dst []complex64, alpha complex64, x []complex64) {
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for i, v := range x {
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dst[i] = alpha * v
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}
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}
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// ScalInc is
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//
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// var ix uintptr
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// for i := 0; i < int(n); i++ {
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// x[ix] *= alpha
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// ix += incX
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// }
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func ScalInc(alpha complex64, x []complex64, n, incX uintptr) {
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var ix uintptr
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for i := 0; i < int(n); i++ {
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x[ix] *= alpha
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ix += incX
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}
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}
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// ScalIncTo is
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//
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// var idst, ix uintptr
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// for i := 0; i < int(n); i++ {
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// dst[idst] = alpha * x[ix]
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// ix += incX
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// idst += incDst
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// }
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func ScalIncTo(dst []complex64, incDst uintptr, alpha complex64, x []complex64, n, incX uintptr) {
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var idst, ix uintptr
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for i := 0; i < int(n); i++ {
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dst[idst] = alpha * x[ix]
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ix += incX
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idst += incDst
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}
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}
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// SscalUnitary is
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//
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// for i, v := range x {
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// x[i] = complex(real(v)*alpha, imag(v)*alpha)
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// }
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func SscalUnitary(alpha float32, x []complex64) {
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for i, v := range x {
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x[i] = complex(real(v)*alpha, imag(v)*alpha)
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}
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}
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// SscalInc is
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//
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// var ix uintptr
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// for i := 0; i < int(n); i++ {
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// x[ix] = complex(real(x[ix])*alpha, imag(x[ix])*alpha)
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// ix += inc
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// }
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func SscalInc(alpha float32, x []complex64, n, inc uintptr) {
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var ix uintptr
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for i := 0; i < int(n); i++ {
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x[ix] = complex(real(x[ix])*alpha, imag(x[ix])*alpha)
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ix += inc
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}
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}
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